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@knorrium
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Created May 17, 2012 03:57
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Node.js email handling examples
config.json
reading-image.png

Some examples of sending and receiving emails with Node.js.

This uses the following libraries:

Running

Copy config.json.example to config.json and enter your email account details.

Run coffee send.coffee to send yourself an email with an attachment.

Run coffee read.coffee to receive the sent email and write the attachment back to disk with a new name.

{
"name": "My Name",
"email": "user@domain.com",
"username": "user@gmail.com",
"password": "MYPASSWORD",
"imap": {
"host": "imap.gmail.com",
"port": 993,
"secure": true
},
"smtp": {
"host": "smtp.gmail.com",
"ssl": true
}
}
# This example script opens an IMAP connection to the server and
# seeks unread messages sent by the user himself. It will then
# download those messages, parse them, and write their attachments
# to disk.
# Install node-imap with `npm install imap`
imap = require "imap"
# Install mailparser with `npm install mailparser`
mailparser = require "mailparser"
# You need a config file with your email settings
fs = require "fs"
config = JSON.parse fs.readFileSync "#{process.cwd()}/config.json", "utf-8"
server = new imap.ImapConnection
username: config.username
password: config.password
host: config.imap.host
port: config.imap.port
secure: config.imap.secure
exitOnErr = (err) ->
console.error err
do process.exit
server.connect (err) ->
exitOnErr err if err
server.openBox "INBOX", false, (err, box) ->
exitOnErr err if err
console.log "You have #{box.messages.total} messages in your INBOX"
server.search ["UNSEEN", ["SINCE", "Sep 18, 2011"], ["FROM", config.email]], (err, results) ->
exitOnErr err if err
unless results.length
console.log "No unread messages from #{config.email}"
do server.logout
return
fetch = server.fetch results,
request:
body: "full"
headers: false
fetch.on "message", (message) ->
fds = {}
filenames = {}
parser = new mailparser.MailParser
parser.on "headers", (headers) ->
console.log "Message: #{headers.subject}"
parser.on "astart", (id, headers) ->
filenames[id] = headers.filename
fds[id] = fs.openSync headers.filename, 'w'
parser.on "astream", (id, buffer) ->
fs.writeSync fds[id], buffer, 0, buffer.length, null
parser.on "aend", (id) ->
return unless fds[id]
fs.close fds[id], (err) ->
return console.error err if err
console.log "Writing #{filenames[id]} completed"
message.on "data", (data) ->
parser.feed data.toString()
message.on "end", ->
do parser.end
fetch.on "end", ->
do server.logout
# This script will send an image as an email attachment to the
# user himself. The receiving part of this is in read.coffee
# Install EmailJS with `npm install emailjs`
email = require "emailjs"
# You need a config file with your email settings
fs = require "fs"
config = JSON.parse fs.readFileSync "#{process.cwd()}/config.json", "utf-8"
server = email.server.connect
user: config.username
password: config.password
host: config.smtp.host
ssl: config.smtp.ssl
message = email.message.create
text: "This is test"
from: "#{config.name} <#{config.email}>"
to: "#{config.name} <#{config.email}>"
subject: "Testing Node.js email capabilities"
message.attach "reading.png", "image/png", "reading-image.png"
server.send message, (err, message) ->
return console.error err if err
console.log "Message sent with id #{message['header']['message-id']}"
@mscdex
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mscdex commented May 17, 2012

In read.coffee, instead of using sync methods (fs.openSync and fs.writeSync), you can do async writing via fs.createWriteStream(), then .write() on that stream, and then call .end() when you're done.

@knorrium
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Thanks @mscdex - I'll give it a try! :)

@knorrium
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By the way, @mscdex, thanks a bunch for node-imap!

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